Marceline, The Vampire Queen

Flying
Whenever an opponent casts a spell, that player
creates a Red token. (It's an artifact with
"{1},{t}, Discard a card, Sacrifice this artifact : Draw
a card.")
Whenever Marceline, The Vampire Queen
attacks, it gets +1/+0 for each Red token
defending player controls.
{1}{b}: Regenerate Marcy